A Commonwealth of Australia 1968 One Dollar note (Coombs/Randall)(serial AGE to AHY), uncirculated and in absolute mint condition could fetch up to $990 AUD. If it has been circulated but still in good condition, it might fetch anything from $80 to $390 AUD.
A reputable coin dealer will be able to give a more accurate valuation.
A Commonwealth of Australia Two Dollar note (Coombs/Randall)(serial FKD to FPS), uncirculated and in absolute mint condition could fetch up to $295 AUD. If it has been circulated but still in good condition, it might fetch anything from $40 to $110 AUD. A reputable coin dealer will be able to give a more accurate valuation.
A Commonwealth of Australia 1967 Twenty Dollar note (Coombs/Randall)(serial XBQ to XBS), uncirculated and in absolute mint condition could fetch up to $9,000 AUD. If it has been circulated but still in good condition, it might fetch anything from $500 to $2,600 AUD. A Commonwealth of Australia 1968 Twenty Dollar note (Phillips/Randall)(serial XBS to XEU), uncirculated and in absolute mint condition could fetch up to $425 AUD. If it has been circulated but still in good condition, it might fetch anything from $45 to $200 AUD. A reputable coin dealer will be able to give a more accurate valuation.
A Commonwealth of Australia Ten Dollar note (Coombs/Wilson - serial SAA -SDR), uncirculated and in absolute mint condition could fetch up to $95 AUD. If it has been circulated but still in good condition, it might fetch anything from $15 to $35 AUD. A reputable coin dealer will be able to give a more accurate valuation.
All Australian bank notes had "COMMONWEALTH OF AUSTRALIA" on them until 1972. Following a change of government in November 1972, the words "COMMONWEALTH OF AUSTRALIA" were replaced with "AUSTRALIA".
Not enough information. Has it been circulated? Is there anything unique about it? Whose signature is on the front? What is the serial number? Notes printed from 1966-1972 will have "COMMONWEALTH OF AUSTRALIA" printed at the top, front and back. Notes printed from 1972-1994 will have only "AUSTRALIA" printed at the top, front and back.
That sort of information is not usually circulated unless it is particularly newsworthy. The highest price listed in catalogues for an Australian One Dollar note is for the 1968 Commonwealth of Australia, Coombs/Randall Star Replacement note in the prefix range AGE to AHY, in mint uncirculated condition. The quoted price is $10,800 AUD. This price should not be regarded as indicative for all Australian One Dollar notes. The going rate for circulated notes in good condition with no outstanding features is much more likely to range $1 to $40 AUD.
The most valuable Australian Two Dollar note, in mint uncirculated condition, would be the 1968 (Coombs/Randall) note in the serial range FKD to FPS which might fetch up to $295 AUD.
A Commonwealth of Australia 1967 One Dollar note (Coombs/Wilson), uncirculated and in absolute mint condition could fetch up to $90 AUD. If it has been circulated but still in good condition, it might fetch anything from $10 to $32 AUD. A reputable coin dealer will be able to give a more accurate valuation.
Tasmania is an island state of the Commonwealth of Australia. They use the Australian dollar.
A Commonwealth of Australia 1966 Ten Dollar note (Coombs/Wilson)(serial SAA to SDR), uncirculated and in absolute mint condition could fetch up to $110 AUD. If it has been circulated but still in good condition, it might fetch anything from $18 to $50 AUD. A reputable coin dealer will be able to give a more accurate valuation.
An Australian One Dollar note (Phillips/Randall - serial APK), uncirculated and in absolute mint condition could fetch anything up to $85 AUD. If it has been circulated but still in good condition, it might fetch anything from $1 to $2 AUD. A reputable coin dealer will be able to give a more accurate valuation.
The currency in Australia is the Australian Dollar.